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Author Topic:   406 ideas
posted March 07, 2002 06:33 PM
wingnut, where are you from......I looked at your profile and you didn't fill that out.

If you are close enough I got a 406 that we could discuss.

posted March 08, 2002 08:41 PM
wingnut, That's okay.....I will still give my thoughts on building a budget 406....

because you are on a budget.....will you be useing a cast crank? If you are planning the cast crank keep the compression down in the 11 to 1 area........I personally don't like the 6 inch rod with a spec tire....
for a late model or another car with enough tire patch to hold the torque curve a 6 inch rod in a 406 is good........If you run that plastic tire IMCA runs I don't think a big compression long rod 406 is the HOT ticket.
I would rather have a mild 406 with a broad torque curve that helps keep the tires on the car. A flatter/wider torque curve is also easier to drive.....On a dyno that long rod 406 with 12.5 to 1 will make MORE power.
But on the race track is where it all counts, and a 406 11 to 1 will win more features on a dry slick........also with the life span of the low compression the money you save will be better spend on fresh tires more often.

When you get into high compression you add too much cost to the span is shorter between rebuilds, deck of block becomes a problem, main webs become a problem, head gaskets become a problem....all these problems can be over come, But it takes money.........after market caps.....then line bore....after market crank..ect.

If you run the lower compression you save a few hundred dollars every corner you cross in the road.......those dollars should be spent on tires.


posted March 11, 2002 04:34 PM
The way I read the post on rods is that the 6" rod made a broader torque band???

posted March 13, 2002 06:58 PM
thank you for your help,we have never ran a 406 in a mod,still don't know if we should,but your explanation made a lot of sense. thank you again

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